Why do some of my carts leak oil after using then a while? : trees(01)

Why do some of my carts leak oil after using then a while? : trees(01)

Image gallery: Carts Leaking

Broken/leaking cart. What recourse do I have after I’ve gotten home and Why do some of my carts leak oil after using then a while? : trees What Makes Carts Leak at Joel Norris blog